Marconi Osram thermionic triode valve

Made:
1923 in England
Marconi Osram thermionic triode valve

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Marconi Osram thermionic triode valve

29

C2949

Details

Category:
Radio Communication
Object Number:
Y7001.677
Materials:
glass and metal (unknown)
Measurements:
overall: 104 mm 44 mm,
type:
triode valve and thermionic valve